ConvertPlug is an all-in-one and most affordable WordPress popup plugin that will help you generate more leads and get more email subscribers. With a variety of elements, like the modal popups, the slide-in popups, infobars, scroll boxes, inline forms, sticky notification bar, and more. ConvertPlug gives you the freedom to use the ready-made templates or layouts that are 100% customizable, or design one right from scratch.v2.3.1
https://changelog.brainstormforce.com/convertplug/